Define Drag load test of shock transmission unit?
This test ensures that excessive load should not be transmitted to the structure by the STU. As per the test the STU shall have an impressed deflection of ‘0 mm - 40 mm - 0 mm - 40 mm - 0' mm in not less than 10 hrs and not more than 24 hrs. During the impressed deflection cycle the STU shall develop no more drag force than 10% of the maximum design capacity of 3100 KN.